void Result(string msg, bool isInput)
{
if (isInput)
{
isPoint = true;
calcState = CalcState.Result;
PerformCalculation();
operation = "";
changeTextDelegate.Invoke(resultNumber);
}
else
{
if (Rules.IsOperation(msg))
{
Operation(msg, true);
}
else if (Rules.IsNonZeroDigit(msg))
{
tempNumber = "";
resultNumber = "";
changeTextDelegate.Invoke(tempNumber);
AccumulateDigits(msg, true);
}
else if (Rules.IsResult(msg))
{
Result(msg, true);
}
else if (Rules.IsQuickOperation(msg))
{
QuickOperation(msg, true);
}
}
}
void AccumulateDigits(string msg, bool isInput)
{
if (isInput)
{
calcState = CalcState.AccumulateDigits;
tempNumber += msg;
changeTextDelegate.Invoke(tempNumber);
}
else
{
if (Rules.IsDigit(msg))
{
AccumulateDigits(msg, true);
}
else if (Rules.IsOperation(msg))
{
Operation(msg, true);
}
else if (Rules.IsResult(msg))
{
Result(msg, true);
}
else if (Rules.IsQuickOperation(msg))
{
QuickOperation(msg, true);
}
else if (Rules.IsPoint(msg) && isPoint)
{
isPoint = false;
AccumulateDigits(msg, true);
}
}
}
void QuickOperation(string msg, bool isInput)
{
if (isInput)
{
if (resultNumber != "")
{
tempNumber = resultNumber;
resultNumber = "";
}
isPoint = true;
calcState = CalcState.QuickOperation;
operation = msg;
QuickCalulation();
changeTextDelegate(tempNumber);
}
else
{
if (Rules.IsNonZeroDigit(msg))
{
tempNumber = "";
resultNumber = "";
changeTextDelegate.Invoke(tempNumber);
AccumulateDigits(msg, true);
}
else if (Rules.IsOperation(msg))
{
Operation(msg, true);
}
else if (Rules.IsQuickOperation(msg))
{
QuickOperation(msg, true);
}
}
}